My dad's hair was thick, straight and black before he went gray and it started thinning. My mom's hair is naturally light brown, wavy and fine.
My hair seems to be a mixture of the two, but a lot more like my mom's. My hair is fairly thick and coarse, like my dad's, but it's brown, wavy and prone to frizz like my mom's. My hair is curlier than my mom's and a lot darker, but I definitely inherited my hair from her.
Somehow, my sister ended up with silky, shiny, blonde, slightly wavy hair. Lucky her